Jak wygenerować silne hasła jednorazowe w Linuksie?

pwgen -sy 30
date +%s | sha256sum | base64 | head -c 30 ; echo
strings /dev/urandom | grep -o '[[:alnum:]]' | head -n 30 | tr -d '\n'; echo
< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c${1:-30}; echo;
gpg --gen-random --armor 1 30
openssl rand -base64 30

darkstar:~ $ openssl rand -base64 48
TIsXtvV8GYVwLfmu/3QBSgjtYkMt0igSnptSutQaPzBPj5mG5hScYduUlvF7bEQv
darkstar:~ $ openssl rand -base64 8
g3hWwwomLIY=